Category
page 1Thesauri (lexicography)
thesaurus
thumb|Thesaurus Linguae Latinae
thumb|A modern English thesaurus

Amarakosha
thumb|A 19th-century Amarakosha manuscript with Newar language commentary from [[Nepal.]]
thumb|Cover of a modern copy of Amara kosha
Dictionary.com
Dictionary.com is an online dictionary whose domain was first registered on May 14, 1995. The primary content on Dictionary.com is a proprietary dictionary based on the Random House Unabridged Dictionary, with editors for the site providing new and updated definitions. Supplementary content comes from the Collins English Dictionary, American Heritage Dictionary and others. It is owned by IXL Learning.
Roget's Thesaurus
English thesaurus, a book listing categories of words grouped by semantics (multiple editions)
Asās al-balāghah
book by al-Zamakhsharī
reference.com
Reference.com is an online encyclopedia that organizes content that uses a question-and-answer format. Articles are organized into hierarchical categories.